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Finding the Fourth Proportional to 519,936.85, 779,932.95 and 164,978.65

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Solution

The fourth proportional to 519,936.85, 779,932.95 and 164,978.65 is: 247,476.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,936.85 : 779,932.95 = 164,978.65 : x
  2. Step 2: Convert to fraction form
    519,936.85/779,932.95 = 164,978.65/x
  3. Step 3: Cross multiply
    519,936.85x = 779,932.95 × 164,978.65
  4. Step 4: Simplify right side
    519,936.85x = 128,672,285,181.52
  5. Step 5: Solve for x
    x = 128,672,285,181.52/519,936.85
  6. Step 6: Final answer
    x = 247,476.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.